Revenge
LISA: EDGE AGAIN! Maybe, just maybe, I'll stop sucking his big cock for a second and look at you the way that this whore is in this slide and laugh at you like she is. Even a whore knows you are not man enough to please her. Look at her laughing at you. She's sucking MY boyfriend's cock while MY cuckold slut husband watches her. You have no idea how bad I am going to make you pay for this.
You fight to hold the edge and beg Lisa to let you stop. Carrie laughs very loud at your pathetic request and Lisa denies it.
LISA: Absolutely not! Keep stroking bitch! I want 5 more edges with a 5 second rest between each before the next slide!
CARRIE: I'll be inspecting my floors again, asshole!
LISA: You know what? If you can hold the last edge for the entire next slide, I might even let your pathetic ass cum.
Hearing this gets Carrie's attention and she looks at Lisa as if she had lost her mind.
(edge 5 times with a 5 second rest between each)